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Full disclosure |
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IT Security and Insecurity Portal |
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Meta tags exploit |
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 Posted: Sat Jul 17, 2004 8:32 pm |
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| Harry |
| Regular user |
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| Joined: May 20, 2004 |
| Posts: 14 |
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Many sites allow you to use html tags viz in Guestbooks, feedbacks, topsites etc. This can easily be exploited to redirect the entire webpage to whatever site/page you want.
Proof of concept:
Sign up for a topsites where you are allowed to use html tags in site description & use the followeing tag:
<meta http-equiv="refresh" content="1;URL=http://harry-inc.com"> to redirect the entire page to your site 
Solution: Disable HTML tags |
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Re: Meta tags exploit |
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| Posted: Sun Jul 18, 2004 10:13 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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| Harry wrote: |
Solution: Disable HTML tags
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Harder way is to allow some html tags, like <b>, <u>, etc.
But this needs bulletproof sanitizing code  |
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www.waraxe.us Forum Index -> All other security holes
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